Magnaflux Spotcheck SKL-WP2 Water Washable Penetrate eliminates the need for solvent removers or emulsifiers in the removal of excess surface penetrate. SKL-WP2 is a red-visible dye, low odor, water washable penetrate that exhibits outstanding penetrating characteristics and discontinuity identification. Eliminates the need for solvent removers or emulsifiers in the elimination of excess surface penetrate.